X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_hash%2Frte_cuckoo_hash.h;h=fb19bb27dfeff613866b2dba4f56f2696011a867;hb=2dcb5f798729589f4d9e33ede598f70ac59281f5;hp=0548c97f04b04fbceecd7c33b1fdcdd667a08e23;hpb=90fefe78bfe0da46c92cc925be2f5c1dffc49711;p=dpdk.git

diff --git a/lib/librte_hash/rte_cuckoo_hash.h b/lib/librte_hash/rte_cuckoo_hash.h
index 0548c97f04..fb19bb27df 100644
--- a/lib/librte_hash/rte_cuckoo_hash.h
+++ b/lib/librte_hash/rte_cuckoo_hash.h
@@ -211,6 +211,13 @@ struct rte_hash {
 	rte_rwlock_t *readwrite_lock; /**< Read-write lock thread-safety. */
 	struct rte_hash_bucket *buckets_ext; /**< Extra buckets array */
 	struct rte_ring *free_ext_bkts; /**< Ring of indexes of free buckets */
+	/* Stores index of an empty ext bkt to be recycled on calling
+	 * rte_hash_del_xxx APIs. When lock free read-write concurrency is
+	 * enabled, an empty ext bkt cannot be put into free list immediately
+	 * (as readers might be using it still). Hence freeing of the ext bkt
+	 * is piggy-backed to freeing of the key index.
+	 */
+	uint32_t *ext_bkt_to_free;
 	uint32_t *tbl_chng_cnt;
 	/**< Indicates if the hash table changed from last read. */
 } __rte_cache_aligned;